A series of emergency landings and parts falling from U.S. military aircraft have highlighted safety concerns.

The number of incidents involving U.S. military personnel and equipment in Japan has recently increased, fueling the nation's opposition to the local USA military bases. Japan's public broadcaster NHK said he had a broken leg.

According to sources close to the matter, the condition of the pilot who was rescued by the Japanese side after ejecting from the jet remains unknown. "If that happens, we can not fulfill our responsibilities to our children and grandchildren". "The Japanese government doesn't have the capacity to address the problems as its own", the governor added. Training operations with F-15 fighters will temporarily cease while operational, maintenance and safety procedures are reviewed, according to a statement from the base.

Significant maintenance issues regarding F-15s have been on the radar in the United States, forcing a portion of the Air National Guard's fleet to be grounded in March.